Statements of Income Statement (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues	$ 46,059	$ 56,326	$ 87,709	$ 102,035
Cost of Revenue	22,544	26,104	42,320	48,048
Gross Profit	23,515	30,222	45,389	53,987
Research and Development Expense	10,214	9,385	19,917	19,187
Selling, General and Administrative Expense	10,519	9,934	20,771	19,113
Amortization of Intangible Assets	648	416	1,264	832
Operating Expenses	21,381	19,735	41,952	39,132
Operating Income (Loss)	2,134	10,487	3,437	14,855
Interest Expense, net	1,200	1,079	2,409	2,155
Total other expenses (income)	(398)	(523)	(49)	(104)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	1,332	9,931	1,077	12,804
Income Tax Expense (Benefit)	573	3,585	(75)	4,596
Net Income (Loss) Attributable to Parent	$ 759	$ 6,346	$ 1,152	$ 8,208
Earnings Per Share, Basic	$ 0.02	$ 0.20	$ 0.04	$ 0.26
Earnings Per Share, Diluted	$ 0.02	$ 0.19	$ 0.03	$ 0.25
Weighted Average Number of Shares Outstanding, Basic	32,567	32,144	32,633	32,110
Weighted Average Number of Shares Outstanding, Diluted	33,155	32,727	33,284	32,745